Fluid-pressure motor and transmission apparatus.



E. E. GRAY.

FLUID PRESSURE MOTOR AND TRANSMISSiON A PARATUS. AP PLICATI ON FILEDMAR. 9. 1914.

1,252,799. Patented Jan. 8,1918.

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FLUID-PRESSURE MOTOR AND 'rnansm rssion ArriinArUs;

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Specification of Letters Patent. x

PLENO, ILLINOIS. assmrion TO GRAY rlvnomn'rro GEAR sr'irrr COMPANY, ACORPORATION-F manners-.-

Application axe-1 March 2, 1914. Serial No. 823.5302

To (ZZZ whom it ma 1 concern Be it known that'I, Enwann E, citizen ofthe United States, residinat Plano in the county of Kendall and State ofIllinois, have invented certain new and useful Improvements inFluid-Pressure M0 tors and Transmission Apparatus, of which thefollowing is a specification.

.This invention relates to an apparatus for controlling gear shiftingmechanism and a motor therefor by fluid under pressure, whereby themotor may be started and the operation of changing the gears'may beeffected entirely by fluid pressure devicesf The principal object of theinvention is to provide apparatus of this kind which .is'

simple to control and effective and eflicilent in operation. v Y Afurther object of the inventionisto rovide a control system of tliiskindwhich is particularly adapted. n use in connection with a motorvehicle by means of which the motor can be started-by fluid pressuredevice controlled from the dash of the vehiclerand the transmissiongears may beshifted into and outo'lf different driving engagements by afluid pressure device controlled from the steering post or any othersuitable or convenient part, and a fluid pres sure device which isoperated by th; motor to maintain a supply of fluid under pressure in asuitable reservoir. v

For the attainment of these ends and the accomplishment of other new anduseful objects as will appear, the invention rousists in the features ofno elty in the con struction, combination and arrangement of the severalparts generally shown in the ac companying drawings and described in thespecification, but more pm'tieularly pointed out in the appended claims.

In the drawings a motor and a transmission case are showndiagrannnatically to which are applied the various devices and fsionmechanism -i'n"'atr'an'sniiss gins of a motor v'ehicleflVith apneiunz itio on as 7 the well knownmannerf An engine shaft"? extends it 1 u crankcase 8 and'to it is'eonnected'zipneulna tic starter device 9. and acompressor 10, The starter comprises'a o'ne way clutch (not shown) ofany 'well known construction, and the compressor is preferably conneCtQdto one face of the starter so that it"occupi es the least possiblespace. An intake pipe 11 for the compressor is connected tothe crankcase 8 above the oil leveltherein so thlzitth'e compressor may belubricated 'thej'oil contained in the'air, the crank provided with aseparate air inlet'lQ' to afford a circulation of air through the crankcase. vA compressor discharge pipe 13 is connected to a valve 14. Thestarter 9 is also connected to the valve 14by means of a pipe 15, and areservoir-'16 is connectedtc the valve by means of a pipe 17; i This 'v'i 14 is provided with a valve stem '18 cairjy ngf' a valve 18 which isopenedagl instjth'j res-f sure of valve spring 1' l to admit fluid underpressure from the supply"reservoir 16th the starter. The valve is alsoprovided" with a check 19 pressed in position by a spring 19".

rateiiteaiiani s 191s? Gear, :1 system it is also necessary to providefacoin-4 pressor. In the" present f invent1on and pressure gearshifting'merlia nism has. been 5 5 added by means'of whiclr'th'eshiftalile rs may be moved into and out et-the; .d if out drivingengagements by me as i pressure device --'.operated "from" the vsourceof supply, and 'the starting I for so themotor may be controlled nomahedm erisseat of the vehicle in the easiest'p ible 'rnanner. I I I i" Inthe present} embodimentfof in vnition, a'mot'or 5 in connected withsmis} 6};

disposed inside the valve spring 14: and held 7 in place by the valvestem 18, the check ,19 covering: the discharge from the air compres-'sor so that the compressed air is admitted BEST AVAILABLE COP ssurethrough the check to the sup- '0ir 16 but not to the starter un irtervalve 18 happens to be open.

to the fluid pressure gear shifting device 26 as causing it to operatemechanism to shift'one of the gears previously selected-for opera- 1 thevalve stem 18 a member 20 is tior by means of the selecting mechanism.

by means of a rod 21 to a pivoted After the engine has been started'th'ecom-' 22 provided with a push button pressor 10 is o dash 24. When thebutton 23 is plenish the Sn 3 valve 18 is opened to admit fluid throughthe v sure from the reservoir 16 to the 16, and the h A hand-valve 25may also be proshown by means of an mfirs?- on the Eerably adjacent thestorage resdash 24 connected with the valve la by means y means of whichthe fluid under of a pipe &3. the reservoir may be shut off It isobvious th "his apparatus or system pparatus is not in use, from any offluidpressurc xduz lil i independent of 'ough the valves 14 or the otherthe spec fic construction of any of its partsand no specificconstruction of the starter tion with the gear case 6 and concompressoror gear hifting devicc' is there- 'ie shiftable gears of the transforeshown. :hanism is a fluid pressuregear What I claim is:.

'ice designated generally by the 1. In fluid pressure starter imeral 26and comprising a rosor mechanism for automobil tin member 27, a valve'28. and combination with a fluid pressure reservoir; 3 s iftable rods29 which conof acommon housing having a separate ement of the shiftablegears in tubular connection with the starter-,the com iwn manner.Connected to the pressor, and the reservoir; avalve in thehous' y meansof universal joints 3O ing to admit fluid under-pressure.- from the 80 1is a pinion 32, and meshing compressor through the housing to the m is agear segment 33 mounted reservoir; and another valve in the housingwhich extends upwardly on a to admit fluid under pressure from the g 35and is provided at its upper reservoir throughthe housing to thestarter, 1 arm 36 movable over an .indi- 2. In fluid pressure starterandcompresr quadrant 37. sor mechanism for automobile engines; the tothe valve 28 by means of a combination with a fluid pressure reservoir;lutch pedal 39 mounted on a of a common housing having a separat -z hemovement of the clutch tubular connection with the starter, the compply.of fluid under pressure alve. 14 to the supply reservoir ead .or press"fluid is 'I' i :i' I

and compresperated continuously'to re- 70 e engines; the

ates the clutch 41 against the pressor, and the reservoir; 2d a.- doubleEtch spring 42 and operates the valve in the housing compr' pg a checkefluid pressure gear shifting valve between the compressor and reservoiropening or closing a connecconnection, and a single manually operable 5fluid pressure reservoir 16 valve between the starter and reservoir. 7pes 17, and through a pipe42 3. In fluid pressure starter andcomprescting device 27 is actuated by sor mechanism for automobileengines; the essure to engage and opsrflcombination with a fluidpressurereservoir;

e gear shifting rod 29 in 216- of a housing having a chamber connectedthe position of th el or at one end with the starter, at the other end Ie clearly set forth in the apwith the compressor, and intermediate the11(-l ldlng application Serial No. ends with the reservoir; and a double1 the United States Patent spring-pressed valve in the housing comutJuly 11, 1912.

prising a check valve for the compressor with the engine at rest theconnection and manually operable valve for s operated, which opensconthe starter connection.

:reservoir 16 by means of the 4. In fluid pressure starter andcompresthrough the valv 18 to the sor mechanism for automobile engines;the

n the engine-l is started the combination with a fluid ressurereservoir; ltomatically luncoupled by of a housing having a c hamb'erconnec'ted 2-Way clutch arid the select-, at one end with'the starter,at theother end 120 wed to place the selector 27 with the compressor, ndintermediate the i'ect .-'i 't;ertaindriving conends with the reservoir;a check valve for iedal depressed, which the compressor connection; amanually o 38 to 'urn any previously erable valve for the starterconnection; and

ieutral position, and the rea. spring between the valves tending to keep12f f the Pedal efiects the corthem both closed.

nent of the valve 28 which 5. In a fluid pressure starter and. com on,from the reservoir 16 pressor mechanism for automobiles, th con:-

bination with a valve housing, of a starter In testimony whereof I havesigned my and a compressor connected to the housing name to thisspecification, in the presence of 10 at opposite ends and a reservoirconnected to two subscribing witnesses, on this 17th day the housingbetween the opposite ends, and of February, A. D. 1914.

a check valve in the housing betwrenthe res- I EDWARD E. GRAY. ervon'and the compressor and emanually Witnesses: operable valve 1n thehousing between the .KENT W. WONNELL,

reservoir and the starter. ALLnNA OFFUTT.

